Compilare: user.cpp: In function ‘int main()’: user.cpp:13:11: warning: unused variable ‘x’ [-Wunused-variable] int n,x,y,i,j,t=5,ok,okcre,okdes,nr,mn,mx; ^ user.cpp:13:13: warning: unused variable ‘y’ [-Wunused-variable] int n,x,y,i,j,t=5,ok,okcre,okdes,nr,mn,mx; ^ user.cpp:13:17: warning: unused variable ‘j’ [-Wunused-variable] int n,x,y,i,j,t=5,ok,okcre,okdes,nr,mn,mx; ^ user.cpp:14:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:23:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^